/********************************************************************************************************************************
* Licensed Materials - Property of IBM                                                                                          *
*                                                                                                                               *
* IBM Cognos Products: HTS                                                                                                      *
*                                                                                                                               *
* (C) Copyright IBM Corp. 2005, 2021                                                                                            *
*                                                                                                                               *
* US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. *
*********************************************************************************************************************************/

var HTS_MENU_STATE = "hts_menu_state";
var HTS_FOCUS_ID = "hts_focus_id";


function hts_getMenuStateObjectFromCookie(){
    var menuStateObjectStr = _F_Document.getCookie(HTS_MENU_STATE);
    var menuStateObject;    
    
    if(menuStateObjectStr){
        menuStateObjectStr = _F_Strings.urlDecode(menuStateObjectStr);
        menuStateObject = JSON.parse(menuStateObjectStr);
    }else{
        //new boy
        menuStateObject = new Object();                      
    }
    return menuStateObject;
}

function hts_setMenuStateObjectToCookie(menuStateObject){
    var menuStateObjectStr = dojo.toJson(menuStateObject);   
    
    menuStateObjectStr = _F_Strings.urlEncode(menuStateObjectStr);
    _F_Document.setCookie(HTS_MENU_STATE, menuStateObjectStr, '', _F_Config.gateway, '', '');
}

function hts_updateMenuStateCookie(filterType,jsonStr){
    
    var menuStateObject = hts_getMenuStateObjectFromCookie();
    
    menuStateObject[filterType] = jsonStr;
    
    hts_setMenuStateObjectToCookie(menuStateObject);
    
}
function hts_getMenuStateCookieValue(filterType){
    
    var menuStateObject = hts_getMenuStateObjectFromCookie();
    
    return menuStateObject[filterType];            
}

function hts_setFocusCookie(focusId) {
    focusIdStr = _F_Strings.urlEncode(focusId);
    _F_Document.setCookie(HTS_FOCUS_ID, focusIdStr, '', _F_Config.gateway, '', '');
}

function hts_getFocusCookie() {
    var focusId = _F_Document.getCookie(HTS_FOCUS_ID);
    return focusId;
}


/*
 * Set the filter. Update the UI and store the filter value into a fragment transient variable
 * frag - The fragment containing the menu
 * filterType - Three filter types defined : Task.Status, Task.Priority and Task.CreatedOn
 * newValueIndex - The menu item index (starts at zero)
 * value - optional value which overrides the menu value. Useful when generating dynamic values based on the menu action
 */
function setFilter(frag,filterType,newValueIndex,value) {
    var menu = this.ui_curmenu;
    
    //update the menu title with the current filter
    var filterValue = updateFilterMenuTitle(menu,newValueIndex);
    
    //set the value if it has been overridden, ignore the menu item value
    if (value!= undefined) {
    	filterValue=value;
    }

    //flag the menu to be rebuilt the next time it is opened. This will ensure the
    //checkbox is shown next to the new filter
    menu.rebuild=true;

    /*
     * Create the placeholder in JSON format. Holds the menu index and it's value. Note that
     * the date filter dynamically creates it's value while the others are static
     */
    var jsonObj = new Object();
    jsonObj.name=newValueIndex;
    jsonObj.value=filterValue;
    var jsonStr = dojo.toJson(jsonObj);
    
    hts_updateMenuStateCookie(filterType, jsonStr);

    //set the filter value, this will call the server-side interaction stage
    frag.transientUpdate(filterType,jsonStr,'application');
}

/*
 * Update the menu with the new filter and set the title to reflect the new item
 * returns the new value
 * menu - The menu
 * newValueIndex = the position of the selected menu item, can also pass in the menu title
 */
function updateFilterMenuTitle(menu,newValueIndex) {

    //select the new item in the menu
    var def = menu.menudef;
    var newValue=null;
    for(var i = 0; i < def.items.length; i++) {
        var item = def.items[i];
        if (newValueIndex==i) {
            item.selected=true;   

            if (item.image) {
                //We have text, but we need to display an image.
                var menuDivTxt = dojo.byId(def.id+"_div_text");
                if (menuDivTxt) {
                    dojo.attr(def.id+"_div_text","style",{display:"none"});
                }

                dojo.attr(def.id+"_img", {
                    src: item.pre+item.image+item.post,
                    alt: item.title,
                    title: item.title,
                    style: {display:''}
                });

            } else {
                var menuDiv = dojo.byId(def.id+"_img");
                //We have an image, but we need to display text.
                if (menuDiv) {
                    dojo.attr(def.id+"_img","style",{display:"none"});
                }
                menuDiv = dojo.byId(def.id+"_div_text");
                dojo.attr(menuDiv,{innerHTML:item.title,style: {display:''}});
            }
            newValue=item.value;
			
            //change the alt/title of the arrow image to reflect the new filter name
            dojo.attr(def.id+"_downarrow_img_id", {
                alt: item.title,
                title: item.title
            });
        }
        else {
            item.selected=false;
        }
    }

    return newValue;
}

/*
 * Initialise the filter menu
 * menu - the filter menu
 * filter - the filter details in JSON format
 */
function initFilter(menu,filter) {
    
    if (filter!= undefined && filter!='') {
        //eval the JSON object
        var nameValue = eval('(' + filter + ')');
    							
        //set the index												
        updateFilterMenuTitle(menu,nameValue.name);
    }
}

function hts_getSelectedMenuItem(menu) {
    //select the new item in the menu
    var def = menu.menudef
    var selectedItem=null;
    for(var i = 0; i < def.items.length; i++) {
        var item = def.items[i];
        if (item.selected==true) {
            selectedItem = item;
        }
    }    
    
    return selectedItem;
}